Staff holder



G. E. GAUS STAFF HOLDER Filed Oct. 4, 1934 April 2, 1935.

ZiNVENTUR BE EAU AT'IEIRNEY Patented Apr. 2, 1935 UNITED STATES STAFFHOLDER George E. Gall S, Washington, D. 0.; dedicated to the free use ofthe public Application October 4,

a 2 Claims.

1934, Serial No. 746,841

(Granted under the act of March 3, 1883, as amended April so, 1928; 3700. G. 757) This application is made under the act approved March 3,1883, as amended by the act of April 30, 1928, and the invention hereindescribed may be manufactured and used by or for the 5 Government forgovernmental purposes without the payment to me of any royalty thereon.

I hereby dedicate the invention herein described to the free use of thepublic, to take effect upon the granting of a patent to me.

My invention relates to that class of holders employing a socket havingyielding walls and gripping means, andhas for its primary object toprovide a staff retaining device of simple and inexpensive construction,permitting the engagement, retention and release of the staff withoutauxiliary mechanical manipulation.

' A further object of my invention is to provide a reasonably secureretention for the staff when subjected to lateral draft, yet which willpermit the staff to be forcibly rocked'out of engagement.

In order to carry out the purposes of my invention, reference is to behad to the peculiar combination and arrangement of parts as shown in theaccompanying drawing, forming a partof this specification, in whichsimilar numerals refer to similar parts throughout the several views.

Figure I is a plan view of my staff holder, and

Figure II is an enlarged cross-section taken on line AA, illustratingthe method of engagement of the staff with my staff holder, the staffbeing shown in fragmentary elevation for convenience in illustration.

Referring to the drawing, plate I formed of a blank of spring temperedmetal, is provided with a socket 2 adapted to engage a staff 6.

The staff 6 is provided with an unyielding base 3, flange 4, and adepending perpendicular flange 5, formed thereon.

The socket 2 of plate I is provided with outwardly tapered wall 9,dimensioned to readily receive staff base 3. A gripping lip l,dimensioned for a force fit with said staff base 3, is formed integralon tapered wall 9 by an undercut l0.

Annular channels ll, l2, l3, corrugated concentrically with socket 2,areprovided with resilient bridges l6, I1, and I8, integral withresilient walls l4, l5.

My invention maybe practiced by mounting plate I by any suitable means,not shown, which will permit the springing of'corrug'ated annularchannels ll, I2, [3, during the engagement and release of staff base 3.When plate I is thus mounted, engagement of staff 6 with plate I iseffected by inserting staff base 3 within the confines of tapered wall 9of socket 2, thence applying downward pressure on staff 6 causingdepending flange 5 of staff base 3 to bear forcibly against grippinglipl. The diameter of staff base3 is greater than the diameter of socket2 at its junc- I ture with'undercut If], which forms gripping lip 5 l.Downward vertical pressure on staff 6 causes a slight inward deflectionof tapered wall 9 with concurrent yielding of resilient members l4, l5,

l6, I1, and I8, thus permitting continued downward movement of staffbase 3 within socket 2. 10 Downward movement of staff 6 is ultimatelyarrested by contact of flange 4 with the upper surface of socket 2.

It is apparent, related parts of staff 6 and plate I are so dimensionedthat the relatively small line area presented by gripping lip I whenplaced in forcible contact with flange 5 results in a bitelike andsecure retention of staff base 3, not readily obtainable in a broadsurface friction contact between concentric parts without application ofconsiderable pressure upon the meeting parts.

Release of staff base 3 from contact with gripping lip 1 maybe effectedby forcibly applying lateral draft, from various angles, to staff 6,thereby causing unequal flexing action of the resilient members ofannular channels II, l2, l3, with consequent deformation of theconcentric line of contact between gripping lip l and staff base 3.

It is obvious that minor changes may be made in the details ofconstruction and the arrangement of the parts without departing from thespirit of the invention as set forth in the appended claims.

Having thus described my invention, what I claim for Letters Patent is:

l. A staff holder comprising a plate having a I socket member formedtherein including a centering portion having an outwardly tapered innerwall contiguous with an arris formed in its lower portion, and asubstantially unyielding staff base therefor including an annularflange, a depressed 40 central portion, and a cylindrical side wall,said I outwardly tapered inner wall and said arris adapted to receiveand to engage the side wall of p the staff base, and a plurality ofsubstantially. resilient corrugated annuli formed on said plateconcentric with the socket member.

2. The combination of a plate, having a socket member, with a staff, abase formed on said staff, said base provided at' its top with a flange,said socket member having an undercut formed there,- on and an arrisintegral therewith adapted to forcibly contact said base, and said platehaving resilient corrugated annuli formed thereon concentric with saidsocket member.

' GEORGE E. GAUS.

